leafletProxy doesn't seem to be functional within shinyDashboard. See working example below where choosing different letters should change the circle color. Any insight appreciated. Github issue created here: https://github.com/rstudio/shinydashboard/issues/377
library(shiny)
library(shinydashboard)
library(leaflet)
library(sf)
n = 100
df1 = data.frame(id = 1:n,
x = rnorm(n, 10, 3),
y = rnorm(n, 49, 1.8))
pts = st_as_sf(df1, coords = c("x", "y"), crs = 4326)
map <- leaflet() %>%
addProviderTiles(provider = providers$CartoDB.DarkMatter) %>%
addCircles(data = pts, group = "pts") %>%
setView(lng = 10.5, lat = 49.5, zoom = 6)
ui <- dashboardPage(
dashboardHeader(),
dashboardSidebar(
selectInput(inputId = 'click', 'Choose one:', c('A', 'B', 'C'))
),
dashboardBody(
fluidRow(
div(
id = "map",
column(
width = 12,
leafletOutput('map', height = '800px')),
)
)
)
)
server <- function(input, output) {
output$map <- renderLeaflet({map})
observeEvent(input$click, {
col <- switch(input$click,
'A' = 'green',
'B' = 'yellow',
'C' = 'white')
m <- leafletProxy("map") %>%
clearShapes() %>%
addCircles(data = pts,
color = col)
m
})
}
shinyApp(ui, server)